#Linux netmap software#

Motivation I needed a browser-based port scanner for an idea I was working on. It’s quite fast, making use of es6-promise-pool to efficiently run the maximum number of concurrent connections browsers will allow. netmap supports access to network cards (NICs), host stack, virtual ports (the 'VALE' switch), and 'netmap pipes'. netmap.js provides browser-based host discovery and port scanning capabilities to allow you to map website visitors’ networks.

#Linux netmap software#

Together with its companion VALE software switch, it is implemented as a single kernel module and available for FreeBSD, Linux and now also Windows (OSX still missing, unfortunately). Within various techniques, DPDK has been widely used because of its more thorough isolation from kernel scheduling and active community support.į-Stack is an open source network framework with high performance based on DPDK， include an user space TCP/IP stack(port FreeBSD 11.0 stable), Posix API(Socket, Epoll, Kqueue), Progamming SDK(Coroutine) and some apps(Nginx, Redis) interface. netmap is a framework for high speed packet I/O. The sequence ends with 0/24 to tell Nmap to scan the entire subnet. If your home network doesn’t use the 192.168.1.X IP structure, substitute in yours. Open up a terminal, if you haven’t already, and run the following linux command. Furthermore, kernel bypass can achieve higher performance with multi optimizing methods. If not, Nmap has a tool to get the IP addresses of the computers on your network. Therefore, kernel bypass can avoid performance bottlenecks caused by kernel packet copy, thread scheduling, system calls and interrupt. The main idea of kernel bypass is that Linux is only used to deal with control flow, all data streams are processed in user space. There are various similar technologies appear, such as DPDK, NETMAP and PF_RING. However, the rapid development of the Internet needs high performance of network processing, kernel bypass has caught more and more attention. With the rapid development of NIC, the poor performance of data packets processing with Linux kernel has become the bottleneck.